[Contact dermatitis from Agave americana].

Numerous plant species and their derivatives can cause skin reactions through a variety of mechanisms: irritative contact dermatitis, allergic contact dermatitis, contact urticaria and photodermatitis. We present a case of irritative contact dermatitis after exposure to the sap of Agave americana. The skin symptoms in this case have only been described on rare occasions; although this condition usually presents with a papulovesicular rash, in this patient it appeared as purpuric lesions in the contact area.

[Nodular primary cutaneous amyloidosis associated with Sjögrens syndrome: presentation of a case].

Nodular primary cutaneous amyloidosis is the least frequent clinical form of the cutaneous amyloidoses. It may be associated with myeloproliferative disorders, as well as with systemic amyloidosis. Its association with other entities, such as Sjögren's syndrome, has recently been described.